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The White House wants to 'cryptographically verify' videos of Joe Biden so viewers don't mistake them for AI deepfakes
(www.businessinsider.com)
This is a most excellent place for technology news and articles.
But then the journalists have to check if the source is trustworthy, as usual. Then they can add their own signature to help other papers check it
To that extent, we already have that.
I go to 'https://cnn.com', I have cryptographic verification that cnn attests to the videos served there. I go to youtube, and I have assurances that the uploader is authenticated as the name I see in the description.
If I see a repost of material claimed to be from a reliable source, I can go chase that down if I care (and I often do).